Tag Archives: Tropical Storm Ivo

Henriette Rapidly Intensifies to a Hurricane

Former Tropical Storm Henriette rapidly intensified to a hurricane northeast of Hawaii on Sunday.  At 5:00 p.m. EDT on Sunday the center of Hurricane Henriette was located at latitude 25.7°N and longitude 152.5°W which put the center about 455 miles (735 km) northeast of Honolulu, Hawaii.  Henriette was moving toward the northwest at 17 m.p.h. (28 km/h).  The maximum sustained wind speed was 80 m.p.h. (130 km/h) and there were wind gusts to 100 m.p.h. (160 km/h).  The minimum surface pressure was 990 mb.

Former Tropical Storm Henriette rapidly intensified to a hurricane northeast of Hawaii on Sunday.  The inner end of a rainband wrapped around the center of Henriette’s circulation.  A circular eye with a diameter of 15 miles (24 km) formed at the center of Hurricane Henriette.  The eye was surrounded by a ring of thunderstorms and the strongest winds were occurring in that rings of storms.  Bands of showers and thunderstorms were revolving around the center of Henriette’s circulation.  Storms near the center of Henriette generated upper level divergence that pumped mass away from the hurricane.  The removal of mass caused the surface pressure to decrease.

The circulation around Hurricane Henriette was small.  Winds to hurricane force extended out 20 miles (30 km) from the center of Henriette’s circulation.  Winds to tropical storm force extended out 70 miles (110 km) from the center of Hurricane Henriette.

Hurricane Henriette will move through an environment favorable for intensification during the next 24 hours.  Henriette will move over water where the Sea Surface Temperatures are near 26°C.  It will move under the middle of an upper level trough that is east of Hawaii.  The upper level winds are weak near the middle of the trough and there will be little vertical wind shear. Hurricane Henriette will intensify during the next 24 hours.  Henriette could continue to intensify rapidly.

Hurricane Henriette will move around the southwestern part of a high pressure system over the central North Pacific Ocean.  The high pressure system will steer Henriette toward the northwest during the next 24 hours.  On its anticipated track, Hurricane Henriette will pass well to the north of Hawaii.

Elsewhere, Tropical Storm Ivo continued to churn west of Baja California. At 5:00 p.m. EDT on Sunday the center of Tropical Storm Ivo was located at latitude 22.1°N and longitude 117.2°W which put the center about 470 miles (755 km) west of the southern tip of Baja California.  Ivo was moving toward the west-northwest at 12 m.p.h. (19 km/h).  The maximum sustained wind speed was 40 m.p.h. (65 km/h) and there were wind gusts to 50 m.p.h. (80 km/h).  The minimum surface pressure was 1006 mb.

Tropical Storm Henriette Passes Northeast of Hawaii

Tropical Storm Henriette was passing northeast of Hawaii on Sunday.  At 5:00 a.m. EDT on Sunday the center of Tropical Storm Henriette was located at latitude 23.8°N and longitude 150.3°W which put the center about 420 miles (675 km) northeast Hilo, Hawaii.  Henriette was moving toward the northwest at 15 m.p.h. (24 km/h).  The maximum sustained wind speed was 40 m.p.h. (65 km/h) and there were wind gusts to 50 m.p.h. (80 km/h).  The minimum surface pressure was 1006 mb.

Former Tropical Storm Henriette strengthened back to a tropical storm as it moved northeast of Hawaii on Sunday.  More thunderstorms former near the center of Henriette’s circulation.  The inner end of a rainband wrapped much of the way around the center of Tropical Storm Henriette.  A clear area was forming at the center of Henriette.  Storms near the center of Henriette generated upper level divergence that pumped mass away from the tropical storm.

The circulation around Tropical Storm Henriette was small.  Winds to tropical storm force extended out 105 miles (165 km) from the center of Henriette’s circulation.

Tropical Storm Henriette will move through an environment favorable for intensification during the next 24 hours.  Henriette will move over water where the Sea Surface Temperatures are near 26°C.  It will move under the middle of an upper level trough that is east of Hawaii.  The upper level winds are weak near the middle of the trough and there will be little vertical wind shear.  Tropical Storm Henriette will intensify during the next 24 hours.

Tropical Storm Henriette will move around the southwestern part of a high pressure system over the Eastern North Pacific Ocean.  The high pressure system will steer Henriette toward the northwest during the next 24 hours.  On its anticipated track, Tropical Storm Henriette will pass well to the north of Hawaii.

Elsewhere, Tropical Storm Ivo was weakening southwest of Baja California.  At 5:00 a.m. EDT on Sunday the center of Tropical Storm Ivo was located at latitude 21.5°N and longitude 114.9°W which put the center about 335 miles (535 km) west-southwest of the southern tip of Baja California.  Ivo was moving toward the west-northwest at 8 m.p.h. (13 km/h).  The maximum sustained wind speed was 40 m.p.h. (65 km/h) and there were wind gusts to 50 m.p.h. (80 km/h).  The minimum surface pressure was 1006 mb.

Tropical Storm Ivo Moves South of Baja California

Tropical Storm Ivo moved south of Baja California on Friday.  At 5:00 p.m. EDT on Friday the center of Tropical Storm Ivo was located at latitude 20.4°N and longitude 111.2°W which put the center about 190 miles (310 km) south-southwest of the southern tip of Baja California.  Ivo was moving toward the west at 13 m.p.h. (21 km/h).  The maximum sustained wind speed was 65 m.p.h. (105 km/h) and there were wind gusts to 80 m.p.h. (130 km/h).  The minimum surface pressure was 999 mb.

Tropical Storm Ivo exhibited much more organization on Friday after it moved south of Baja California.  The inner end of a rainband wrapped around the western side of the center of Ivo’s circulation.  Other bands of showers and thunderstorms were revolving around the center of Tropical Storm Ivo.  Storms near the center of Ivo generated upper level divergence that pumped mass away from the tropical storm.  The removal of mass caused the surface pressure to decrease.

The circulation around Tropical Storm Ivo was small.  Winds to tropical storm force extended out 35 miles (55 km) from the center of Ivo’s circulation.

Tropical Storm Ivo will move through an environment mostly favorable for intensification during the next 24 hours.  Ivo will move over water where the Sea Surface Temperatures are near 27°C.  It will move under the southern side of an upper level ridge over Mexico and the Eastern North Pacific Ocean.  The upper level ridge will produce easterly winds that will blow toward the top of Ivo’s circulation.  However, the winds in the lower atmosphere will also blow from the east.  Since the winds in the upper and lower levels of the atmosphere will blow from the same direction, there will be less vertical wind shear.  Tropical Storm Ivo is likely to intensify during the next 24 hours.  Ivo could strengthen to a hurricane on Saturday.  Ivo will move over cooler water on Sunday which will cause it to weaken.

Tropical Storm Ivo will move around the southern side of a high pressure system that is over Mexico and the eastern North Pacific Ocean.  The high pressure system will steer Ivo toward the west during the next 24 hours.  On its anticipated track, Tropical Storm Ivo will move away from Baja California during the weekend.

Tropical Storm Ivo Moves Southeast of Baja California

Tropical Storm Ivo moved southeast of Baja California on Thursday evening.  At 5:00 p.m. EDT on Thursday the center of Tropical Storm Ivo was located at latitude 19.7°N and longitude 107.3°W which put the center about 275 miles (445 km) southeast of the southern tip of Baja California.  Ivo was moving toward the northwest at 22 m.p.h. (35 km/h).  The maximum sustained wind speed was 60 m.p.h. (95 km/h) and there were wind gusts to 75 m.p.h. (120 km/h).  The minimum surface pressure was 1001 mb.

Even though Tropical Storm Ivo strengthened on Thursday, its structure did not change a lot.  Thunderstorms were still forming near the center of Ivo’s circulation.  Thunderstorms were also occurring in bands in the southern and eastern parts of Tropical Storm Ivo.  Bands in the northern and western parts of Ivo’s circulation consisted primarily of showers and lower clouds.

The circulation around Tropical Storm Ivo was small.  Winds to tropical storm force extended out 45 miles (75 km) from the center of Ivo’s circulation.

Tropical Storm Ivo will move through an environment mostly favorable for intensification during the next 24 hours.  Ivo will move over water where the Sea Surface Temperatures are near 29°C.  It will move under the southern side of an upper level ridge over Mexico.  The upper level ridge will produce easterly winds that will blow toward the top of Ivo’s circulation.  However, the winds in the lower atmosphere will also blow from the east.  Since the winds in the upper and lower levels of the atmosphere will blow from the same direction, there will be less vertical wind shear.  Even though Tropical Storm Ivo will move through an environment most favorable for intensification, Ivo may not intensify a lot on Friday as long as it continues to move quickly toward the west-northwest.  If Tropical Storm Ivo starts to move more slowly, then it could intensify again.

Tropical Storm Ivo will move around the southern side of a high pressure system that is over Mexico.  The high pressure system will steer Ivo toward the west-northwest during the next 24 hours.  On its anticipated track, Tropical Storm Ivo will move south of Baja California on Friday.

Elsewhere over the Eastern North Pacific Ocean, Tropical Storm Henriette weakened slowly as it approached the Central Pacific.  At 5:00 p.m. EDT on Thursday the center of Tropical Storm Henriette was located at latitude 19.1°N and longitude 138.4°W which put the center about 1090 miles (1750 km) east Hilo, Hawaii.  Henriette was moving toward the west at 16 m.p.h. (26 km/h).  The maximum sustained wind speed was 40 m.p.h. (65 km/h) and there were wind gusts to 50 m.p.h. (80 km/h).  The minimum surface pressure was 1007 mb.

Tropical Storm Ivo Forms South of Mexico

Tropical Storm Ivo formed over the Eastern North Pacific Ocean on Wednesday afternoon.  At 5:00 p.m. EDT on Wednesday the center of Tropical Storm Ivo was located at latitude 14.2°N and longitude 99.1°W which put the center about 195 miles (310 km) south-southeast Acapulco, Mexico.  Ivo was moving toward the west-northwest at 22 m.p.h. (35 km/h).  The maximum sustained wind speed was 40 m.p.h. (65 km/h) and there were wind gusts to 50 m.p.h. (80 km/h).  The minimum surface pressure was 1008 mb.

A low pressure system over the Eastern North Pacific Ocean south of Mexico strengthened on Wednesday afternoon and the U.S. National Hurricane Center designated the system as Tropical Storm Ivo.

The circulation around Tropical Storm Ivo organized quickly on Wednesday afternoon.  Thunderstorms developed near the center of Ivo’s circulation.  Thunderstorms also formed in bands revolving around the center of Tropical Storm Ivo.  Storms near the center of Ivo began to generate upper level divergence that pumped mass away from the tropical storm.

The circulation around Tropical Storm Ivo was small.  Winds to tropical storm force extended out 25 miles (40 km) in the northern side of Ivo’s circulation.  The winds in the southern side of Tropical Storm Ivo were blowing at less than tropical storm force.

Tropical Storm Ivo will move through an environment mostly favorable for intensification during the next 24 hours.  Ivo will move over water where the Sea Surface Temperatures are near 29°C.  It will move under the southern side of an upper level ridge over Mexico.  The upper level ridge will produce easterly winds that will blow toward the top of Ivo’s circulation.  However, the winds in the lower atmosphere will also blow from the east.  Since the winds in the upper and lower levels of the atmosphere will blow from the same direction, there will be less vertical wind shear.  Tropical Storm Ivo is likely to strengthen during the next 24 hours.

Tropical Storm Ivo will move around the southern side of a high pressure system that is over Mexico.  The high pressure system will steer Ivo toward the west-northwest during the next 24 hours.  On its anticipated track, Tropical Storm Ivo will move parallel to the coast of southern Mexico.

Bands in the northern side of Ivo’s circulation could drop heavy rain on parts of southern Mexico.  Heavy rain could cause flash floods in Guerrero, Michoacan, and Colima.

Elsewhere over the Eastern North Pacific Ocean, Tropical Storm Henriette continued to churn toward the Central Pacific.  At 5:00 p.m. EDT on Wednesday the center of Tropical Storm Henriette was located at latitude 18.1°N and longitude 131.3°W which put the center about 1555 miles (2505 km) east Hilo, Hawaii.  Henriette was moving toward the west at 16 m.p.h. (26 km/h).  The maximum sustained wind speed was 50 m.p.h. (80 km/h) and there were wind gusts to 65 m.p.h. (105 km/h).  The minimum surface pressure was 1005 mb.

Tropical Storm Ivo Forms South of Baja California

Tropical Storm Ivo formed south of Baja California on Wednesday.  At 5:00 p.m. EDT on Wednesday the center of Tropical Storm Ivo was located at latitude 15.8°N and longitude 109.5°W which put it about 490 miles (790 km) south of the southern tip of Baja California.  Ivo was moving toward the west-northwest at 20 m.p.h. (32 km/h).  The maximum sustained wind speed was 45 m.p.h. (75 km/h) and there were wind gusts to 60 m.p.h. (95 km/h).  The minimum surface pressure was 1004 mb.

A distinct low level center of circulation developed in a low pressure system south of Baja California on Wednesday and the National Hurricane Center designated the system as Tropical Storm Ivo.  A band of thunderstorms wrapped around the western and southern parts of the center of circulation and satellite sensors indicated that winds to tropical storm force were occurring in the band.  Other bands of thunderstorms developed in the western half of Tropical Storm Ivo.  Bands in the eastern half of the circulation consisted primarily of showers and lower clouds.  Thunderstorms near the center of Ivo began to generate upper level divergence which was pumping mass away from the tropical storm.

Tropical Storm Ivo will move through an environment favorable for intensification during the next 36 to 48 hours.  Ivo will move over water where the Sea Surface Temperature is near 29°C.  It will move south of an upper level ridge that stretches from west of California to northern Mexico.  The ridge will produce easterly winds which will blow toward the top of the circulation.  Those winds will cause some vertical wind shear, which could slow the rate at which Tropical Storm Ivo intensifies. However, the shear will not be strong enough to prevent intensification and Ivo could strengthen into a hurricane within 36 hours.  Tropical Storm Ivo will start to move over cooler water when it moves west of Baja California and that will cause it to weaken during the weekend.

The ridge will steer Tropical Storm Ivo toward the northwest during the next several days.  On its anticipated track Tropical Storm Ivo will move west of Baja California.  The primary impact of Ivo will be to generate waves which will reach the west coast of Baja California and southern California.